miller



2 Sheets-Shet 1.

P. MILLER.

VENTILATING' GRATE.

Patented Mar. 4, 1890.

e l VIYYVESSES,

A TTORNE W N, PETERS, Phul0-LillIcgnphen wumn mn. u C.

2 Sheets--Sheet 2.

R E L L TL M P (No Model.)

VENTILATING GRATE.

Patented Mar. 4, 1890.

l VJTNESSES A TTORNEYJ N. FETER5. Phulc-Llihcgraphcr, Washin ton. D C.

UNITED STATES.

PATENT OFFICE.

PETER MILLER, OF CLEVELAND, OHIO, ASSIGNOR TO THE MILLER GRATE COMPANY,OF SAME PLACE.

VENTlLATlNG-GRATE.

SPECIFICATION forming part of Letters Patent No. 422,887, dated March 4,1890. Application filed September 29, 1888. $erial No. 286,799. (Nomodel.)

To all whom it may concern:

Be it known that I, PETER MILLER, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented certain new and usefulImprovements in Ventilating-Grates; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

My invention relates to improvements in s0-callec ventilatingparlor-grates, and it consists in certain features of construction andin combination of parts hereinafter described, and pointed out in theclaims.

. In the accompanying drawings, Figures 1 and 2 are correspondingelevations, the former being in section through the center of thedevice, and the latter having only portions broken away to show theconstruction. Fig. 3 is a plan, partly in section. Fig; 4 is a rearelevation in detail. Fig. 5 is a rear elevation, partly in section. Fig.6 is a reduced front elevation.

The walls of the fire-place or fire-boX-to wit, back wall A, side wallsA, and sloping wall A -are usually of cast-iron and integral. The lowersection of wall A is offset rearward at a, as shown in Fig. 1, and abovethe ofiset the wall is integral with a series of hollow lugs a. The rearends of these lugs are solid, the chambers a thereof opening onlyforward. These chambers a arepacked, preferably,with fine soapstonefilling a although doubtless fire-clay, and, perhaps, other filling,would an swer the purpose. If anything further than hard tamping werenecessary to hold the filling in place, such want is supplied by thepresence of lining B, the latter consisting, preferably, of a slab ofsoapstone placed fiatwise against the front side of the upper section ofplate A, as shown in Fig. 1.

B is the grate, and O the ash-screen, sometimes called the crowmscreell.

D is a casing, usually of galvanized iron, the same inclosing the rearportion of the fire-place walls aforesaid. Casing D has a flangedopening D for connecting with the cold-air pipe or duct. (Not shown.)This casing is offset at (Z, the latter being located some distanceabove offset a, and from offset (Z upward the casing abuts the rear endof lugs to, by reason of which air entering through opening D andpassing up along the back of wall A niustn ecessarily pass between thedifferent lugs a, such air being heated by contact with the lugs. Thetop portion of the casing extends forward and engages plate A near theupper edge of the latter. Casing D is considerably Wider than thefire-box or fire-place walls aforesaid, and the casing is provided withj ambs D that engage the sides of walls A along the lines d d and oneither side of the fire-place. The heated air from between the casingand fire-place passes out through side ducts (1 that discharge into thelateral chamber a, from whence the heated air is discharged into theroom through the open-work in plate E. This latter plate, together withthe vertical plate E,constitutes what is known as the grate-frame, thesame being more or less ornamented usually, and chamber 6 eX- tendingthe length of plate E, the latter forming the front wall of suchchamber. These ducts d are provided with dampers; but as they are ofordinaryconstruction they are not shown.

F is a smoke-box located in the inclined position shown in Figs. 1 and2, the chamber thereof at the front end opening directly over thefire-box for receiving the products of combustion that pass up throughthe chimney. The forward lower wall of the smoke-box c0nnects with theupper end of plates A and A and the upper rear end of the smoke-box isprovided with a flanged opening f for connecting. with an uprightsmoke-pipe or chimney. (Not shown.)

G is a movable plate that serves as a blower, and also serves as asummer front, and may, if need be, serve as a hood to prevent the gratefrom smoking. The plate is usually decorated and fits easily betweenframe-sections E and fills the space between plate E and the grate. (SeeFig.1.) To plate G are attached supporting-chains g, each chain eX-tending over wheels H and h, and the rear end of these chainsconnecting, respectively, with bar I, near the ends of the latter, thisbar serving as a counterbalance for the plate.

A ring g or handle of some kind is attached I00 to the loweredge of theplate midway later-.

of plate G may serve as a hood, and may be left protruding more or less,as may be needed for such purpose. WVith an old style of blower thatmoves in a vertical plane either the mantel had to be brought so farforward that the pocket for receiving the blower could be constructed atthe rear of the mantel, or else the mantel had to be of such elevationthat the blower-pocket could be built under the mantel; also, theconstruction of such pocket in such location was somewhat troublesomeand expensive. \Vith my improved construction the mantel can,if desired,rest on top of the grate-frame, and the grate may bebrought forward orretired rearward, as preferred, regardless of the mantel that may bedirectly over the grate-frame. Usually a recess is left in the brickwalls, and the castiron fireplace and the sheet-metal casing D arefastened together and set into such recess.

Ileretofore there has been some difficulty in making a tight joint atthe opening D. The pipe or duct that received flange D necessarilyfitted loosely, and to make approxifmately a tight joint at this part alarge quantity of cement was poured in from above and at the rear ofcasing D with more or less success, according to circumstances.

As an improvement, I provide door A in wall A, such door being locateddirectly opposite opening D. When therefore the fireplace and casing arein position, access is had through door A and opening D to pack betweenflange D and the pipe or duct-wall around this flange, the amount ofcement required for such purpose being quite insignificant, as comparedwith the practice aforesaid. The lining B of course protects theiron-work; but it, together with the filling in lugs a, per= forms otherimportant service. Heretofore these lugs have been cast solid and thelining B was dispensed with, in order that much heat might betransmittedthrough the metal for heating the air in the chamber at therear.

\Vith such construction heat was too readily transmitted, so that thefire adjacent to the iron wall was likely to be extinguished.Consequently the air heated and discharged into the room from suchapparatus was subjected to great fluctuations in temperature. With myimproved construction these lugs heat slowly and retain their heat along time. During the day much heat is stored in these lugs and liningB, and this heat is imparted to the air passing through the chamber atthe rear, and by regulating the draft of air through this chamber theroom may be kept comfortable during the night. During the day, while thefire is the hottest, the heat is being stored in these lugs, andconsequently the heat in the room is not so oppressive as it wouldotherwise be.

I make no claim in this application to the arrangement of hot-air flues,thelugs project: ing rearwardly from the fire-box, and door locatedopposite the induction-opening in the outer wall, as the same forms thesubjectmatter of application, Serial No. 309,183, filed May 1, 1889.

WVhat I claim is 1. In a parlor-grate, the combination, with inclinedsmoke-box located above the firebox, substantially as indicated, of atilting plate serving in turn as blower, summer front, and hood, thesaid tilting plate being adapted to stand upright in front of thefire-place and to tilt rearward over the smoke-box with the elevation ofthe plate, substantially as set forth. I

2. In a parlor-grate, the combination, with smoke-box, substantially asindicated, of a plate or blower adapted to tilt back over suchsmoke-box, chains connected with the plate for supporting the latter,and wheels for the chains to travel on, the parts being arrangedsubstantially as and for the purpose set forth.

In testimony whereof I sign this specification, in the presence of twowitnesses, this 20th day of June, 1888.

PETER MILLER.

Witnesses:

CHAS. H. DORER, ALBERT E. LYNCH.

